53091288 has 40 divisors (see below), whose sum is σ = 148706580. Its totient is φ = 17696880.

The previous prime is 53091271. The next prime is 53091293. The reversal of 53091288 is 88219035.

53091288 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×53091288² = 5637369722997888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 40318 + ... + 41613.

Almost surely, 2^53091288 is an apocalyptic number.

It is an amenable number.

53091288 is an abundant number, since it is smaller than the sum of its proper divisors (95615292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53091288 is a wasteful number, since it uses less digits than its factorization.

53091288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81949 (or 81936 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 53091288 is about 7286.3768774337. The cubic root of 53091288 is about 375.8441144962.

The spelling of 53091288 in words is "fifty-three million, ninety-one thousand, two hundred eighty-eight".